# iter_swap(ranges::cartesian_product_view::iterator)

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< cpp‎ | ranges‎ | cartesian product view‎ | iterator

friend constexpr void iter_swap( const /*iterator*/& x, const /*iterator*/& y ) noexcept (/* see description */) requires (std::indirectly_swappable< ranges::iterator_t</*maybe-const*/<Const, First>>> and ... and std::indirectly_swappable<ranges::iterator_t</*maybe-const*/<Const, Vs>>>); |  | (since C++23)

Applies ranges::iter_swap to the stored underlying iterators. Formally, for every integer 0 ≤ i ≤ sizeof...(Vs), performs ranges::iter_swap(std::get<i>(x.current_), std::get<i>(y.current_)), where `current_` is the underlying tuple of iterators.

This function is not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when `cartesian_product_view::iterator<Const>` is an associated class of the arguments.

### Parameters

x, y | - | iterators to the elements to swap

### Return value

(none)

### Exceptions

The exception specification is equivalent to the logical AND of the expression noexcept(ranges::iter_swap(std::get<i>(x.current_), std::get<i>(y.current_))) for every integer 0 ≤ i ≤ sizeof...(Vs).

### See also

iter_swap (C++20) | swaps the values referenced by two dereferenceable objects (customization point object)
iter_swap | swaps the elements pointed to by two iterators (function template)

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